mozilla/bedrock — pull request #230 by icaaq (2012-07-03 18:42:52+00:00)
Title: Move os detection class and script to head/html-element

According to paul irish "Scripts in the body blocks rendering…" http://paulirish.com/2009/avoiding-the-fouc-v3/ this will move the os detection from the body to the html-element similar to the no-js/js handling.